Sorry if this has been answered previously - I could not find an answer.

I am simply needing to know if it is possible to create a drop list for the outputclass attribute (or any attribute for that matter). I would like to simplify the effort of the author by providing a list instead of remembering what is available.

I looked into modifying the cc_config.xml file, but that didn't appear to fit the need.

Sorry about the delay, the Web Author Server should also have the same DITA framework folder bundled with it so this cc_config.xml configuration change made to the DITA framework that is made for the standalone version of Oxygen can also be used there.